After five failed attempts with the 'wrong' face, Apple's Face ID system will fall back to asking a passcode; a tricky situation for investigators.
“It was even simpler than we ourselves had thought.”
Here’s an answer to every question you have about Apple’s latest innovation.
But privacy experts aren't fully convinced.
The first time it showed off its new security feature in public, it failed.
The stock dropped from around $163 a share to $159 a share — its lowest point of the day.